Colombo (CMB) to London (LON): 5,415 miles (8,715 km) great-circle, about 11h 20m nonstop by our estimate. Cheapest fare observed: $724 round-trip on Etihad, with 1 stop, departing May 1, 2026.
$724 round-trip, Etihad EY393, departing 2026-05-01 at 10:00, returning 2026-05-20. The recorded itinerary left on a Friday, returning on a Wednesday 19 nights later; the fare was observed 6 days before departure. "Book this flight" opens Kiwi.com with the same airline and dates.
At $724, it ranked 23rd of the 30 round-trip fares we recorded from CMB (median $495). That is 13.4 cents per great-circle mile (round-trip price over one-way distance), below the CMB median of 22.4 cents across 30 round-trip routes.
Routes from CMB of similar length: St. Petersburg (4,453 mi) at $992 and Minsk (4,316 mi) at $1144.
CMB to LON is the only one of 30 CMB routes where Etihad priced cheapest. It is the longest of the 30 routes we track from CMB.
Of 49 departure airports with a fare to London, Colombo (CMB) ranked 23rd at $724. Lowest: $46 from Dublin (DUB); highest: $1356 from Sydney (SYD); 14 nonstop. Cheapest-fare airlines (routes): Ryanair (7), easyJet (4), Etihad (4), Frontier (4), Air Canada (3) and WestJet (3), plus 19 more.
That depends on your passport and trip, so check the official source for United Kingdom: GOV.UK: check if you need a UK visa. Connecting elsewhere? Check that country's transit rules too.
Travelpayouts fares (cheapest per route, observed April 25, 2026); OurAirports coordinates and elevations; IANA zones Asia/Colombo, Europe/London; flight time is our estimate.